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Exhaust fluid filter including hydrocarbon detection witness media

A filter and fluid technology, used in exhaust devices, exhaust treatment, diagnostic devices for exhaust treatment devices, etc.

Active Publication Date: 2017-08-01
CUMMINS EMISSION SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This resulted in a large number of warranty claims from customers, as it was not always possible to determine whether failures of SCR aftertreatment systems were due to hydrocarbon contamination and thus could be attributed to customer negligence,

Method used

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  • Exhaust fluid filter including hydrocarbon detection witness media
  • Exhaust fluid filter including hydrocarbon detection witness media
  • Exhaust fluid filter including hydrocarbon detection witness media

Examples

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Embodiment Construction

[0016] The embodiments described in this application generally relate to an exhaust aftertreatment system for an IC engine, and specifically relate to an exhaust aftertreatment system including a hydrocarbon detection device and an exhaust reducing agent filter. The various embodiments described in this application can provide several advantages over traditional aftertreatment systems, for example: (1) Observing the color change of the hydrocarbon detection device to detect exhaust gas reductant (such as diesel exhaust fluid) Visual diagnosis of hydrocarbon pollution; (2) Ability to detect very low concentrations of hydrocarbons in exhaust reductant; (3) Easy to adapt to traditional after-treatment systems without any significant changes to traditional after-treatment systems; and (4) ) Provides confirmation whether any damage to the aftertreatment system is due to hydrocarbons in the exhaust reductant, which can be attributed to user error and is not covered by the warranty, th...

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PUM

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Abstract

An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.

Description

Technical field [0001] This application generally relates to exhaust aftertreatment systems for internal combustion (IC) engines. Background technique [0002] In the combustion process of IC engines (such as diesel engines), sulfur forms various sulfur oxides (SO) together with carbon monoxide (CO) and hydrocarbons (HC). x ). Usually, the SO present in the exhaust gas x 97-99% of the total amount includes sulfur dioxide (SO 2 ), SO present in the exhaust gas x 1-3% of the total amount includes sulfur trioxide (SO 3 ). Therefore, fuels with higher sulfur content tend to produce larger amounts of SO 3 . For example, a fuel with a sulfur content of 1000 ppm will form about 1-3 ppm SO 3 . [0003] The exhaust gas aftertreatment system is used to receive and process the exhaust gas produced by the IC engine. Traditional exhaust aftertreatment systems include any of several different components to reduce the level of harmful exhaust emissions present in exhaust gas. For example, cer...

Claims

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Application Information

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IPC IPC(8): F01N3/022
CPCF01N2610/02F01N2610/1426F01N2900/1818F01N3/2066F01N2550/14Y02T10/12F01N3/0226F01N3/021
Inventor K·古多夫
Owner CUMMINS EMISSION SOLUTIONS
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